A 60 kg person stands on bathroom scales in a lift. The lift is moving upwards and slowing down at 2 m/s². Use g = 9.81 m/s². Find the force N the scales exert on the person (the scale reading in newtons).
A 95 kg person stands on bathroom scales in a lift. The lift starts moving downwards with an acceleration of 2.5 m/s². Use g = 9.81 m/s². Find the force N the scales exert on the person (the scale reading in newtons).
A 20 kg block slides down a slope at 20° to the horizontal. The coefficient of kinetic friction is 0.2. Use g = 9.81 m/s². Find the acceleration a of the block along the slope.
Masses of 9 kg and 0.5 kg hang on either side of a light, frictionless pulley, connected by a light string. The system is released from rest. Use g = 9.81 m/s². Find the tension T in the string.
A 4.5 kg block on a horizontal table is connected by a light string over a frictionless pulley to a hanging 3 kg mass. The coefficient of kinetic friction between block and table is 0.3. Use g = 9.81 m/s². Find the acceleration a of the system.
A 1 kg block on a horizontal table is connected by a light string over a frictionless pulley to a hanging 0.5 kg mass. The coefficient of kinetic friction between block and table is 0.1. Use g = 9.81 m/s². Find the tension T in the string.
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