SaraNextGen Study App [2022-23]
Last Updated On 23-10-2022 - By Sara

A block of mass 10kg is kept on a rough inclined plane as shown in the figure.  A force of 3 N is applied on the block.  The coefficient of static friction between the plane and the block is 0.6.  What should be the minimum value of force P, such that the block does not move downward?

 

(take g=10ms−2)

a.

32N

b.

25N

c.

23N

d.

18N


Question ID - 50052 :-

A block of mass 10kg is kept on a rough inclined plane as shown in the figure.  A force of 3 N is applied on the block.  The coefficient of static friction between the plane and the block is 0.6.  What should be the minimum value of force P, such that the block does not move downward?

 

(take g=10ms−2)

a.

32N

b.

25N

c.

23N

d.

18N

1 Answer
5876 Votes
3537

Answer Key : (a) -

mg sin450=  = 50

 mgcos =0.6 mg  = 0.6 50

P=31.28=32N



Next Question :

Temperature difference of 1200C is maintained between two ends of a uniform rod AB of length 2L.  Another bent rod PQ, of same cross-section as AB length , is connected across AB(See figure).  In steady state, temperature difference between P and Q will be close to:

a.

600C

b.

750C

c.

350C

d.

450C


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