A child whose weight is 278 N swings out over a pool of water using a...
A child whose weight is 278 N swings out over a pool of water using a rope attached to the branch of a tree at the edge of the pool. The branch is 10.6 m above ground level and the surface of the water is 1.45 m below ground level. The child holds on to a rope of length 3.3 m attached to the branch and moves back until the angle between the rope and the vertical is 46◦ . When the rope is in the vertical position, the child lets go and drops into the pool. The acceleration due to gravity is 9.81 m/s 2 . Find the speed of the child at the surface of the water. Answer in units of m/s.
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A child whose weight is 278 N swings out over a pool of water using a...
A child playing in a swimming pool realizes that it is easy to push a small...
A child playing in a swimming pool realizes that it is easy to push a small inflated ball under the surface of the water whereas a large ball requires a lot of force. The child happens to have a styrofoam ball (the shape of the ball will not distort when it is forced under the surface), which he forces under the surface of the water. If the child needs to supply 635 N to totally submerge the ball, calculate the...
A child playing in a swimming pool realizes that it is easy to push a small...
A child playing in a swimming pool realizes that it is easy to push a small inflated ball under the surface of the water whereas a large ball requires a lot of force. The child happens to have a styrofoam ball (the shape of the ball will not distort when it is forced under the surface), which he forces under the surface of the water. If the child needs to supply 554 N to totally submerge the ball, calculate the...
A child with a weight of 200 N swings on a playground swing attached to 2.00-m-long...
A child with a weight of 200 N swings on a playground swing attached to 2.00-m-long chains. What is the gravitational potential energy of the child- Earth system relative to the child's lowest position at the following times? (a) when the chains are horizontal j (b) when the chains make an angle of 30.0° with respect to the vertical J (c) when the child is at his lowest position A pendulum bob with a mass of 0.370 kg is attached...
1. Power is a quantity Watts. 2. 1 hp is equal to 3. Energy is neither...
1. Power is a quantity Watts. 2. 1 hp is equal to 3. Energy is neither created nor destroyed, only determine the work done on an object, the angle 0, is measured between the Force and the 5. The SI units for Power are 6. Another name for the unit of Work, which is a N m, is called 7. Work done on an object slowing down is 8. Yo u push a lawn mower 6 times as far as...
A child playing in a swimming pool realizes that it is easy to push a small inflated ball under the surface of the water whereas a large ball requires a lot of force. The child happens to have a styrofoam ball (the shape of the ball will not distort when it is forced under the surface), which he forces under the surface of the water. If the child needs to supply 635 N to totally submerge the ball, calculate the...
A child playing in a swimming pool realizes that it is easy to push a small inflated ball under the surface of the water whereas a large ball requires a lot of force. The child happens to have a styrofoam ball (the shape of the ball will not distort when it is forced under the surface), which he forces under the surface of the water. If the child needs to supply 554 N to totally submerge the ball, calculate the...
A child with a weight of 200 N swings on a playground swing attached to 2.00-m-long chains. What is the gravitational potential energy of the child- Earth system relative to the child's lowest position at the following times? (a) when the chains are horizontal j (b) when the chains make an angle of 30.0° with respect to the vertical J (c) when the child is at his lowest position A pendulum bob with a mass of 0.370 kg is attached...
1. Power is a quantity Watts. 2. 1 hp is equal to 3. Energy is neither created nor destroyed, only determine the work done on an object, the angle 0, is measured between the Force and the 5. The SI units for Power are 6. Another name for the unit of Work, which is a N m, is called 7. Work done on an object slowing down is 8. Yo u push a lawn mower 6 times as far as...
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