The Idea of Average Force
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The net force acting on the particle is
- 2As(1+sR)
- As(1+s2R2)1/2
- 2As(1+s2R2)1/2
- zero
If you performed a work "W" on an object and no external forces are acting on you and the object, while doing this work, which of the following can be true:
Work done by the object on you is "-W"
Work done on you is "-W"
Work done by the object is "-W"
Work done by you is "W"
A freight car is moving on smooth horizontal track without any external force. Rain is falling at the rate of u m/s at an angle θ with the vertical. Rain drops are collected in the car at the rate of μ kg/s. If initial mass of the car is m0 and velocity v0 then find its velocity after time it.
v=2ucosθ(m0m0+μt−1)+m0v0(m0+μt)
v=usinθ(m0m0+μt−1)+3m0v0(m0+μt)
v=usinθ(m0m0+μt−1)+m0v0(m0+μt)
Zero
A hypothetical spring type object, exerts a force dependent on diplacement x, given by 4x3. What is the average force exterted by it while being displaced 2 units from its natural position?
2
4
8
16