The mass is rising with a constant speed.
=> So it has no vertical acceleration.
=> So there is no net vertical force acting on it.
=> So the sum of the vertical forces on it is zero.
There are two vertical forces acting on the mass.
=> the force of gravity, pulling it down
=> the tension in the cable, pulling it up.
The force of gravity acting on the mass (its weight) is (mass) x (gravity).
=> That's (120 kg) x (9.8 m/s²) downward.
=> That's 1,176 newtons downward.
If the vertical forces add up to zero, the other force ... the tension in the cable ... must be the same magnitude in the opposite direction.
=> The force of tension in the cable is <em>1,176 newtons upward</em>.
Answer:
central nervous system
peripheral nervous system
Explanation:
The nervous system has two main parts: The central nervous system is made up of the brain and spinal cord. The peripheral nervous system is made up of nerves that branch off from the spinal cord and extend to all parts of the body.Oct 1, 2018
Distance= 44m Mag=20m Direction=North. Can you check answers to see if it's right?
Answer:
a) 9.81 m/s²
b) 5.22 m
Explanation:
Any object falling to the surface of Earth has a constant acceleration. It does not matter what the initial speed is the rate of change of velocity will be constant. The constant value is calculated by
g = Accleration due to gravity
G = Gravitational constant = 6.67 × 10⁻¹¹ m³/kgs²
M = Mass of Earth = 5.972 × 10²⁴ kg
r = Radius of Earth = 6.371×10⁶ m
Plugging all the values we get
g = 9.81 m/s²
The speed of the stone is increasing. Downward direction is considered as positive.
Time = t = 0.46 s
u = Initial velocity = 9.1 m/s
s = Displacement
Equation of motion
Distance travelled in 0.46 seconds is 5.22 m
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