Author Question: A block of mass m sits at rest on a rough inclined ramp that makes an angle with the horizontal. ... (Read 140 times)

pragya sharda · **on:** Jul 29, 2018

A block of mass m sits at rest on a rough inclined ramp that makes an angle with the horizontal. What must be true about the force F that the ramp exerts on the block perpendicular to the surface of the ramp?

A) F > mg
B) F > mg cos
C) F > mg sin
D) F = mg cos
E) F = mg sin

Question 2

Scientists have recently discovered that

A) some, or possibly all, types of neutrinos have rest mass.
B) it is possible for neutrinos to spontaneously transmute from one of the three neutrino types to another.
C) Both of the above.
D) None of the above.