Classical Mechanics Answers

Two force vectors with |A| = 65 N and |B| = 76 N make an angle of 45° with each other. C is the sum of these two vectors. Calculate the magnitude of C

Express the force F on an object knowing that its mass is 66 kg and it accelerate at a rate of 0.0247 ms-2 . Express the result with the correct number of digits

Two vectors of magnitude F and 2F have a resultant 1.5F. Calculate the angle between the vectors

Which of the following equations is dimensionally homogenous?

A. F=m(vf - vi)
B. F=1/2 m(vf2-vi2)
C. F=ρVg
D. F=m s / t

A body is called as rigid body if?
A. distance between points remains variable
B. change in volume is significant
C. all of these
D. change in volume is negligible

In mechanics, we can apply a force along any point on the line of action of the force without changing the effect of the force on the body. This is only permissible if:
A. We consider the body to a rigid body
B. None
C. The force is not too large
D. We consider the body to deformable or non-rigid

If the forces between interacting bodies are equal, opposite and collinear, how is it that bodies are able to be accelerated if it these forces cancel each other out?
A. None
B. The masses of the two bodies could be different and this difference causes acceleration.
C. The two forces are acting on different bodies; to analyze acceleration, we need to look at the forces acting only on one body.
D. In real life, the forces are not exactly equal and this difference causes acceleration.

Kindly, tell me how this equation will be solved for distance "d", please.

(d/2)/12 + (d/2)/15 = 3

Thank you.

A car travels east at constant velocity. The net force on the car is: