Answer:
4 is a
Explanation: fixed pulley changes direction
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A. Haha at least need to be 20 words so yeah
Hi there!
Use the following kinematic equation to solve:
vf² = vi² + 2(ad)
Since the initial velocity is 0 m/s because it started at rest, we can eliminate this part of the equation:
vf² = 2ad
Plug in the given acceleration and distance:
vf² = 2(9.8)(16)
vf ≈ 17.7. The correct answer is C.
Answer:
See explanation below.
Explanation:
Given two blocks of masses M and m, And a force F acting on the block of mass M pulling it outside.
The two masses system can be considered as a whole, With F being the only external force acting on them.
Here the spring force has been ignored as while considering the two system as a whole, it will be accounted as an internal force for the system
Therefore, The acceleration of the system will be:
Now both the masses are moving with this same acceleration towards the direction of force
.
Acceleration of mass m = a (as the system is moving as a whole)
Force on the mass m= mass times acceleration.