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a fallen treee is lifted 2.75 meters. How much work is done?
2 Newton-meters
107,800 J
How much work is done on a 50-kg cargo that is lifted by a pulley 10 m from the ground? (Disregard use of comma in writing digits.)
Work is done in lifting is equal to work done in opposing gravity. Work done in opposing gravity = weight times distance = 700 x 4 =2800 joules
a fallen treee is lifted 2.75 meters. How much work is done?
1400j
Work = force * distance Work = 23N * 2.3 meters = 53 Joules of work is done ==================
2 Newton-meters
107,800 J
How much work is done on a 50-kg cargo that is lifted by a pulley 10 m from the ground? (Disregard use of comma in writing digits.)
work done is = to force multiply by displacement here force is = 1000x10 N and dispacement is 75m = 75x104
If a 100 N box is lifted 3 meters off the ground, the answer is 300 joules.
If a 100 N box is lifted 3 meters off the ground, the answer is 300 joules.
If a 100 N box is lifted 3 meters off the ground, the answer is 300 joules.
Work is done in lifting is equal to work done in opposing gravity. Work done in opposing gravity = weight times distance = 700 x 4 =2800 joules
W = Fd; d = W/F = 150 J/100 N = 1.5 m