Question

A horizontal force of 25 N is necessary to just hold a block stationary against a wall. The
coefficient of friction between the block and the wall is 0.4. The weight of the block is

A) 2.5N
B) 20 N
C) 10 N
D) 5 N
JEE Main-21-CAT-6B
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Answer 1

Answer: C

Explanation: Normal reaction = 25N

Frictional force (in this case) = mg

U = coefficient of friction = 0.4

U*N = mg

0.4*25 = mg

10N = mg

Answer 2

Answer:

Explanation:

pls find the attachment