A 23.0-kg child on a 4.00-m-long swing is released from rest when the ropes of the...

A 23.0-kg child on a 4.00-m-long swing is released from rest when the ropes of the swing make an angle of 25.0° with the vertical. (a) Neglecting friction, find the child's speed at the lowest position. m/s (b) If the actual speed of the child at the lowest position is 2.40 m/s, what is the mechanical energy lost due to friction? J

Expert Solution

genius_generous answered 1 year ago

A 31.0-kg child on a 3.00-m-long swing is released from rest when the ropes of the...

A 31.0-kg child on a 3.00-m-long swing is released from rest when the ropes of the swing make an angle of 31.0° with the vertical. (a) Neglecting friction, find the child's speed at the lowest position. (b) If the actual speed of the child at the lowest position is 2.50 m/s, what is the mechanical energy lost due to friction?

a 0.5 long pendulum with a mass of 2 kg is released from rest at an...

a 0.5 long pendulum with a mass of 2 kg is released from rest at an angle of 20 degrees. Find: D. The arc length of the amplitude E. The maximum velocity at the bottom F. The maximum acceleration G. The period of oscillation H. The frequency of oscillation I. The angular frequency of oscillation J. The maximum tension in the string

A 35.0-kg child swings in a swing supported by two chains, each 2.92 m long. The...

A 35.0-kg child swings in a swing supported by two chains, each 2.92 m long. The tension in each chain at the lowest point is 342N. (a) Find the child's speed at the lowest point. m/s (b) Find the force exerted by the seat on the child at the lowest point. (Ignore the mass of the seat.) N (upward)

A 40.0 kg child swings in a swing supported by two chains, each 3.00 m long....

A 40.0 kg child swings in a swing supported by two chains, each 3.00 m long. The tension is each chain at the lowest point is 350 N. Find (a) the child's speed at the lowest point and (b) the force exerted by the seat on the child at the lowest point. (Ignore the mass of the seat.)

A block of mass m = 3.50 kg is released from rest from point A and...

A block of mass m = 3.50 kg is released from rest from point A and slides on the frictionless track shown in the figure below. (Let ha = 5.20 m.) (a) Determine the block's speed at points B and C vB = m/s vC = m/s (b) Determine the net work done by the gravitational force on the block as it moves from point A to point C. J

A child is on a rope swing. When the child and swing are at their highest...

A child is on a rope swing. When the child and swing are at their highest point, the rope makes an angle of 30 degrees with the vertical. The rope is 4.17m long. What is the child's speed when the rope makes an angle of 20 degrees with the vertical? Give your answer in meters per second.

A girl swings back and forth on a swing with ropes that are 4.00m long. The...

A girl swings back and forth on a swing with ropes that are 4.00m long. The maximum height she reaches is 2.10m above the ground. At the lowest point of the swing, she is 0.500m above the ground. What is the girl

1.) In the figure, a block of mass m = 13 kg is released from rest...

1.) In the figure, a block of mass m = 13 kg is released from rest on a frictionless incline of angle θ = 30°. Below the block is a spring that can be compressed 3.7 cm by a force of 210 N. The block momentarily stops when it compresses the spring by 6.0 cm. (a) How far does the block move down the incline from its rest position to this stopping point? (b) What is the speed of the...

A block of mass m = 2.00 kg is released from rest at h = 0.600...

A block of mass m = 2.00 kg is released from rest at h = 0.600 m above the surface of a table, at the top of a ? = 40.0

A 2.3 kg solid sphere (radius = 0.10 m ) is released from rest at the...

A 2.3 kg solid sphere (radius = 0.10 m ) is released from rest at the top of a ramp and allowed to roll without slipping. The ramp is 0.70 m high and 5.7 m long. A.) When the sphere reaches the bottom of the ramp, what is its total kinetic energy? B.) When the sphere reaches the bottom of the ramp, what is its rotational kinetic energy? C.) When the sphere reaches the bottom of the ramp, what is...

Question