Question
What minimum amount of force is required to move a 10kg block kept on a horizontal surface. Given (μs=0.5), (μk=0.4) If the block was already moving then what would be the minimum force required to maintain its velocity at a constant value?
Answer: Option C
:
C
When static,
fmax = μs x N
= 0.5 ×mg
= 0.5 ×10 ×10
= 50N
∴ Minimum value of external force required to move it is 50 N
When moving
F = μk ×N
= 0.4 ×10 ×10
= 40N
∴ When moving, minimum force required prevent it from accelerating/decelerating is 40N.
Was this answer helpful ?
:
C
When static,
fmax = μs x N
= 0.5 ×mg
= 0.5 ×10 ×10
= 50N
∴ Minimum value of external force required to move it is 50 N
When moving
F = μk ×N
= 0.4 ×10 ×10
= 40N
∴ When moving, minimum force required prevent it from accelerating/decelerating is 40N.
Was this answer helpful ?
More Questions on This Topic :
Latest Videos
Latest Test Papers
Submit Solution