a block of mass m is moving with constant speed V on a cirular path of radius R find magnitude of average force acting on it in half revolution
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Change in momentum = Final momentum - initial momentum
= mv - (-mv) = 2mv
Average force = Change in momentum/ time taken
time taken = distance/ speed = πr/v
Average force = 2mv/ (πr/v) = 2mv^2/πr
= mv - (-mv) = 2mv
Average force = Change in momentum/ time taken
time taken = distance/ speed = πr/v
Average force = 2mv/ (πr/v) = 2mv^2/πr
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