Mr. Franklin uses a machine that has an efficiency of 80%. The machine applies a force of 800 N through a distance of 20 m. Mr. Franklin applies a force of 50 N on the machine. Through what distance does Mr. Franklin apply the force?

a. 4 m

b. 16 m

c. 260 m

d. 400 m

Question

Physics

Sundance

22 July, 13:06

Mr. Franklin uses a machine that has an efficiency of 80%. The machine applies a force of 800 N through a distance of 20 m. Mr. Franklin applies a force of 50 N on the machine. Through what distance does Mr. Franklin apply the force?

a. 4 m

b. 16 m

c. 260 m

d. 400 m

+1

Answers (1)

Know the Answer?

Monique Brandt · Answer 1

Answer is d

explanation:

work done by the machine = F x d = 800 x 20 = 16000 J

work done by mr. Franklin = W

W x efficiency = 16000J

W = 16000/0.8 = 20000 J

distance travelled by Franklin = d_f

W = 50N x d_f

d_f = 20000/50 = 400

Mr. Franklin uses a machine that has an efficiency of 80%. The machine applies a force of 800 N through a distance of 20 m. Mr. Franklin applies a force of 50 N on the machine. Through what distance does Mr. Franklin apply the force?a. 4 mb. 16 mc. 260 md. 400 m

Mr. Franklin uses a machine that has an efficiency of 80%. The machine applies a force of 800 N through a distance of 20 m. Mr. Franklin applies a force of 50 N on the machine. Through what distance does Mr. Franklin apply the force?

a. 4 m

b. 16 m

c. 260 m

d. 400 m