Answer:
(a) The magnitude of the lift force is 52144.71 N, approximately.
(b) The magnitude of the air resistance force opposing the movement is 17834.54 N, approximately.
Explanation:
Since the helicopter is moving horizontally at a constant velocity, we can assume that the net force acting on it is zero, then
(a) in the vertical direction we have
.
(b) Now horizontally,
Answer:
926 N
Explanation:
Metric unit conversion:
R = 18 cm = 0.18 m
r = 5 cm = 0.05 m
The pressure exerted by the F = 12000N car on the wider arm would be ratio of the gravity over area
The pressure must be the same on the smaller pressure for it to be able to start lifting the car. We can calculate the force f acting on it:
Answer:
Explanation:
The correct answer is option C.
When the battery is operating a remote control toy the energy is converted from potential energy to the kinetic energy.
A battery stores electrical potential from the chemical reaction.
When the circuit is connected to the potential energy of the battery helps in the movement of the toy.
The energy produced by the movement of the control toy is kinetic energy.
Hence, we can say that Potential energy is changed to kinetic energy
<span>c. run towards a source of water to extinguish the fire
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