107 149
Assignments Done
100%
Successfully Done
In January 2023

# Answer to Question #116386 in Mechanics | Relativity for Michael Mateus

Question #116386
5. A 7650 kg helicopter accelerates upward at 0.80m/s2, while lifting a 1250 kg frame at
a construction site.

a) What is the lift force exerted by air on the helicopter rotors?
b) What is the tension in the cable (ignore its mass) that connects the frame to the
helicopter?
c) What force does the cable exert on the helicopter?
1
2020-05-19T10:45:21-0400

a) What is the lift force exerted by air on the helicopter rotors?

According to Newton's second law:

"F_L-(m+M)g=(m+M)a,\\\\\nF_L=(m+M)(g+a)=\\\\\n=(1250+7650)(9.8+0.8)=94340\\text{ N}."

b) What is the tension in the cable (ignore its mass) that connects the frame to the

helicopter?

From the equilibrium of forces we have:

"T-mg=ma,\\\\\nT=m(g+a)=13250\\text{ N}."

c) What force does the cable exert on the helicopter?

This force is the tension, 13250 N.

Need a fast expert's response?

Submit order

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS!