a) In the Newton\'s law of gravitation, F = Gm1m2/r2, the masses m1 and m2 refer
ID: 1961715 • Letter: A
Question
a) In the Newton's law of gravitation, F = Gm1m2/r2, the masses m1 and m2 refer to an inertial mass.b)For a cart moving along a track with the x-axis parallel to the track, all forces acting on the cart must be along the x-direction.
c)If the cart is moving on the positive x axis, the x-component of velocity must be positive
d)In the figure, the positive direction is taken to the right. The cart is moving to the right. There are two horizontal forces acting on the cart, the external force F and the frictional force f.
Applying Newton's second law gives the equation ma = F + f.
Explanation / Answer
(a)FALSE. inertial mass refers to the mass of a body as determined by the second law of motion from the acceleration of the body when it is subjected to a force that is not due to gravity which is given by newton's second law of motion ie. F=ma.
(b)FALSE. not necessarily. only net force is the criterion of motion. individual forces may be directed in any direction.
(c)TRUE.velocity is the the indicator of motion.
for the (d) part the figure is not given...
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.