An object weighing 4 newtons swings on the end of a string as a simple pendulum. at the bottom of the swing, the tension in the string is 6 newtons. what is the magnitude of the centripetal acceleration of the object at the bottom of the swing?
(a) 0
(b) 0.5 g
(c) g
(d) 1.5 g
(e) 2.5 g

(B) 0.5 g

Explanation:

Newton's second law says ∑  F i = m a .

the rate of change in momentum of a body is proportional to the force applied on the body.

f∝ma

f=kma

were k is constant and equal to 1

The centripetal acceleration is an acceleration.

the tension on the swing and object weight goes to the left hand side while the centripetal acceleration goes to the right handside

At the bottom of the swing, ΣF = FT – mg = mac;

notice that the tension in the swing is 1.5 times the weight of the object

we can write

1.5mg – mg = mac,

0.5mg = mac

0.5 g=ac

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.

the components of a vector are the parts of the vectors that are to each other.

b perpendicular