A boy pulls a 5 kg block 20 metres along a horizontal sur- face at a constant speed with a force
Channel: Doubtnut
Date: 2021-11-11

A boy pulls a 5 kg block 20 metres along a horizontal sur- face at a constant speed with a force directed 45° above the horizontal. If the coefficient of kinetic friction is 0.20, how much work does the boy do on the block?