Chapter 10.1

Question 1

Gravitational potential energy of two bodies definition and formula

Answer 1

The work that was done in bringing the bodies to their present position from when they were infinitely apart

Ep = -(GMm)/r

Question 2

Gravitational potential

Answer 2

The work done per unit mass in bringing a small point mass m from infinity to point P

Question 3

Formula for work done on moving a mass in terms of gravitational potential

Answer 3

W = m∆Vg

Question 4

Electric potential definition and formula

Answer 4

The amount of work done per unit charge as a small positive test charge q is moved from infinity to the point P

Ve = W/q

Question 5

Formula for electric potential energy Ep of a system

Answer 5

Ep = qVe

Question 6

Electric potential in terms of charge

Answer 6

Ve = kQ/r

Question 7

Electric potential energy in terms of charge

Answer 7

Ep = (kQq)/r

Question 8

Equipotential surface

Answer 8

Points that have the same potential

Question 9

Equation for gravitational field strength using gravitational potential

Answer 9

g = ΔVg/Δr

Question 10

How do you find the field strength from a graph showing variation with distance of potential?

Answer 10

Find the gradient