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A block of mass 10kg is pushed up on a s...

A block of mass 10kg is pushed up on a smooth incline plane of inclination `30^(@)`, so that it has acceleration `2m//s^(2)`. The applied force is

A

50 N

B

60 N

C

70 N

D

80 N

Text Solution

Verified by Experts

The correct Answer is:
C

`F-mgsintheta=ma`
`F-10xx10xsin30^(@)=10xx2`
F-50=20
F=70 N
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CP SINGH-NEWTONS LAWS OF MOTION-EXERCISES
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  9. In the previous problem if M=2m, the tension in the middle of the rope...

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  10. Consider the situation as shown in the figure. The system is free to m...

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  14. Three block of masses m(1),m(2) and m(3) kg are placed in contact with...

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  15. All the surface are smooth and the strings ans pulleys are light. The ...

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  16. A block is kept on a frictionless inclined surface with angle of incli...

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  17. A body kept on a smooth inclined plane having inclination 1 in x will ...

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  18. A block of mass m is placed on a smooth wedge of incination theta. The...

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  19. A man of mass m stands on a frame of mass M. He pulls on a light rope,...

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