Why do people sweat .-.
2 answers:
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1) Weight of the person: 490 N
2) Maximum torque: 245 Nm
Explanation:
1)
The weight of a body is equal to the gravitational force exerted on the body; it is given by the equation
where
m is the mass of the body
g is the acceleration due to gravity
For the person in this problem,
m = 50 kg is the mass
is the acceleration due to gravity on Earth's surface
Therefore, the weight of the person is
2)
The turning force (also called torque) exerted by a force rotating an object is given by
where
F is the magnitude of the force
d is the length of the arm (the distance between the force and the pivotal point)
is the angle between the direction of the force and the arm
For the spanner in this problem,
F = 490 N is the force applied (the weight of the person)
d = 0.5 m is the arm (the length of the spanner)
The maximum torque is obtained when , therefore it is:
Learn more about weight:
About torque:
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