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A body of weight 50 N placed on a horizo...


A body of weight 50 N placed on a horizontal surface is just moved by a force of 28.2 N. the frictional force and the narmal reaction are

A

10 N, 15 N

B

20 N, 30N

C

2N, 3N

D

5 N, 6N

Text Solution

Verified by Experts

The correct Answer is:
B
`f = 28.2 cos 45^(@) = (28.2)/(sqrt2) = 20 N`
`N = 50 - 28.2 sin 45^(@) xx 30 N`
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