A robot arm moves so that P travels in a circle about point B, rvhich is not moving. Knowing that P starts from rest, and its speed increases at a constant rate of 10 mm/s^2. determine (a) the rnagnitude ol the acceleration when t : 4 s. (b) the time for the magnitude of the acceleration to be 80 mm/s^2

a.

b.25.2 s

Explanation:

We are given that

Initial velocity=0

Tangential acceleration=

By using

a.t=4 s

Using the formula

Normal acceleration=

Substitute the values

Normal acceleration=

Magnitude of acceleration=a=

Using the formula

Magnitude of acceleration=a

Magnitude of acceleration=a=

b.Magnitude of acceleration=a=

Substitute the values

Hence, the time for the magnitude of the acceleration to be =25.2 s

dang that balls went far

report!

explanation:

physics means: "the branch of science concerned with the nature and properties of matter and energy. the subject matter of physics, distinguished from that of chemistry and biology, includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms."