The figure below shows a person lifting a box with a mass of 29.8 kg to a height of 1.8 m. Determine the potential energy gained by the the box in Joules.
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The figure below shows a person lifting a box with a mass of 29.8 kg to a height of 1.8 m. Determine the potential energy gained by the the box in Joules.
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- A mouse of mass 200 g falls 100 m down a vertical mine shaft and lands at the bottom with a speed of 8.0 m/s. During its fall, how much work is done on the mouse by air resistance?A 150g book is initially at rest on a table that has no friction. A force of 3.2 N is applied to the book which moves over a distance of 1.2 m. The table is 1.4m high. a) What is the work done by the force on the book? b) What is the final speed of the book? c) What is the final kinetic energy of the book? d) What is the gravitational potential energy of the book relative to the table?How much work is done by a person lifting a 4.1 kg object from the bottom of a well at a contact speed of 2.2 m/s for 11s? Write your answer In joules?
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