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Mechanics
Page 5
Questions (39,953)
A spring stretches by 6cm when supporting a load of 15N ,what load would make the spring extend by 25mm
7 answers
asked by
Mish
1,054 views
The Mars rover drops a rock off the rim of a 120 meter high cliff on Mars. The free-fall acceleration is -3.7m/s2. What is the
4 answers
asked by
Alexi
660 views
A 25m ladder is leaning against a
vertical wall. The floor is s lightly slippery and the foot of the ladder slips away from the
4 answers
asked by
Miriama
1,153 views
The moment of inertia of a solid uniform sphere of mass M and radius R is given by the equation I=(2/5)MR2 . Such a sphere is
4 answers
asked by
Anonymous
4,175 views
State the principle of moments. You are supplied with a meter rule ,a 100g weight, a knife edge, thread an object mass between
4 answers
asked by
Anonymous
814 views
Two blocks of masses m1=4kg and m2=5kg are connected by a massless string that passes over a massless frictionless pulley.block
4 answers
asked by
tizazu
1,184 views
a 50 kg block is placed on an inclined plane with an angle of 30. then find the components of the weight (1)perpendicular
4 answers
asked by
shahanshah
2,283 views
a force of 486 lb is necessary to keep a weight of exactly 800 lb from sliding down an inclined plane. What is the angle of
3 answers
asked by
Anonymous
284 views
A ball of mass 50 g tied to the end of a 50 cm inextensible string is whirled around in a vertical circle. Find the tension in
3 answers
asked by
hart
1,072 views
a stone is thrown horizontally from the top of a vertical wall with a velocity of 15m/s, hits the horizontal ground at a point
3 answers
asked by
Josh aile
1,016 views
A stone of mass 5g is projected with a rubber catapult. If the catapult is stretched through a distance of 7cm by an average
1 answer
asked anonymously
19 views
A skier wants to build a rope tow to pull herself up a ski hill that is inclined at 15 with the horizontal. Calculate the
5 answers
asked by
Albert
5,502 views
I have a big online test and would really appreciate if you could please check my answers before I submit them (I only have 1
5 answers
asked by
Tyger2020
1,925 views
Four very thin rods, each 8.3 m long, are joined to form a square. The center of mass of the square is located at the coordinate
4 answers
asked by
Hannah
2,496 views
A solid cylinder with a radius of 5.08 cm starts from rest at the top of a 12m long ramp inclined 20.3 degrees above the
5 answers
asked by
Anonymous
2,507 views
Two metal disks, one with radius R1 = 2.40 cm and mass M1 = 0.900 kg and the other with radius R2 = 4.95 cm and mass M2 = 1.50
5 answers
asked by
121
11,624 views
A ball with a mass of 0.5 kg is traveling at 25 m/s and collides with a ball at rest that has a mass of 2 kg. After the
4 answers
asked by
Faoruk
1,405 views
A satellite is in a circular orbit about the earth (ME = 5.98 x 1024 kg). The period of the satellite is 1.77 x 104 s. What is
5 answers
asked by
Anonymous
15,166 views
A steel wire 40 m long is suspended between two fixed points 20 m apart.
A force of 375 N pulls the wire down at a point 15 m
4 answers
asked by
Alex
2,577 views
A tennis ball is projected vertically upwards from the top of a 55 m cliff by the sea. Its height from the point of projection,
5 answers
asked by
Mishka
2,557 views
A bowler throws a ball down the lane toward the pins. The ball reaches the pins and slowly moves through them, knocking down the
4 answers
asked by
Ieasha30
1,033 views
A ball falls from a tall bridge. The ball has a mass of 0.15 kg. The air density is 1.225 kg/m3
. The ball’s surface area is
4 answers
asked anonymously
522 views
9. A block attached to a spring of negligible mass undergoes simple harmonic motion on a frictionless horizontal surface. The
4 answers
asked by
gomez
2,032 views
The blade of a windshield wiper moves through an angle of 90.0° in 0.398 s. The tip of the blade moves on the arc of a circle
7 answers
asked by
vik
9,956 views
A spiral spring is compressed by 0.03m. Calculate the energy stored in the spring if its force constant is 300N/ m
11 answers
asked by
Tauda
5,618 views
Two blocks are connected by a string over a frictionless, massless pulley such that one is resting on an inclined plane and the
5 answers
asked by
emm
8,080 views
A 4.0 kg object is lifted 1.5 m. (a) how much work is done against the earth's gravity ? (b) repeat if the object is lowered
7 answers
asked by
jack
7,665 views
A soccer ball kicked on a level field has an initial vertical velocity component of 15 meters per second. Assuming the ball
6 answers
asked by
Shannon
23,834 views
1. The weight in the following diagram has a mass of 0.750 kg and the cart has a mass of 0.52 kg. There is a friction force of
5 answers
asked by
liz
5,412 views
a roller whose diameter is 20 in weight 72 lbs. what horizontal force is necessary to pull the roller over a brick 2 in high
5 answers
asked by
peter
4,020 views
A particular Ferris wheel (a rigid wheel rotating in a vertical plane about a horizontal axis) at a local carnival has a radius
4 answers
asked by
waqas
4,305 views
As a 2.0-kg object moves from (2i+5j)m to (6i-2j)m, the constant resultant force acting on it is equal to (4i-3j)N. If the speed
5 answers
asked by
ATT
6,461 views
A 1000 kg car is rolling down the street at 2.5 m/s. How fast would a 2500 kg car have to collide into it in order to bring it
5 answers
asked by
eileen
4,632 views
a light string 4 meters long is wrapped around a solid cylindrical spool with a radius of 0.075 m and a mass of .5 kg.a 5kg mass
5 answers
asked by
mariel
6,952 views
A 3-kg toy car with a speed of 6 m/s collides head-on with a 2-kg car traveling in the opposite direction with a speed of 4 m/s.
4 answers
asked by
Samy
2,773 views
A car mass 600kg moving a speed 20m/s.it collides with a stationary car mass 900kg.if the first car bounce back 4m/s.what speed
5 answers
asked by
Yonas
1,489 views
A roller coaster car of mass 400kg starts from rest at point A and passes the point B with a speed of 3m/s.if the distance from
4 answers
asked by
wallacenjovu
1,872 views
A baby bounces up and down in her crib. Her mass is 13.5 kg, and the crib mattress can be modeled as a light spring with force
5 answers
asked by
gill
1,966 views
A 10,000 kg railroad car traveling north at 10 m/s collides with a 5,000 kg rail car also moving north but at an unknown speed.
5 answers
asked by
Faoruk
2,982 views
A spring is hung from the ceiling. When a coffee mug is attached to its end, it stretches 3.0 cm before reaching its new
4 answers
asked by
Mike
4,672 views
A 0.50 kg cue ball makes a glancing blow to a stationary 0.50 kg billiard ball. After the collision the cue ball deflects with a
5 answers
asked by
grey
2,956 views
What effort is exerted to lift a load of 150N with a machine having a velocity ratio of 3 and efficiency of 20%
4 answers
asked by
Ifedayo
1,399 views
The ski slopes at Bluebird Mountain make use of tow ropes to transport snowboarders and skiers to the summit of the hill. One of
6 answers
asked by
Honey
7,221 views
a worker on the roof of a building that is under construction dropped a 0.125 kg wrench over the edge. another workman on the
4 answers
asked by
lomonoyan
1,668 views
A car traveling 16.0m/s crashes into concrete embankment and stops in 0.08s. Calculate:
the initial speed in mi/hr the average
4 answers
asked by
MARIE
822 views
Two people start running from rest. The first person has a mass of 59 kg and is wearing
dress shoes with a coefficient of static
4 answers
asked by
Anonymous
1,573 views
A uniform road AB of mass 6g is balanced horizontal about a knife edge at a distance of 3cm from end A where a mass of 8g is
4 answers
asked by
fadhili
784 views
A spring with 50 N/m hangs vertically next to a ruler. The end of the spring is next to the 21-cm mark on the ruler.If a 2.5-kg
4 answers
asked by
Anonymous
2,879 views
what happens when a falling object reaches terminal velocity?
1 answer
asked anonymously
84 views
A bicycle and its rider together have a mass of 80 kg. If the bicycle's speed is 6m/s, how much force is needed to bring it to a
5 answers
asked by
Jessica
14,784 views
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