Respuesta :
Answer:
490N
Explanation:
According Newton's second law!
\sum Force = mass × acceleration
Fm - Ff = ma
Fm is the moving force
Ff s the frictional force = 100N
mass = 65kg
acceleration = 6m/s²
Required
Moving force Fm
Substitute the given force into thr expression and get Fm
Fm -100 = 65(6)
Fm -100 = 390
Fm = 390+100
Fm = 490N
Hence the force that will cause two cart to move is 490N
The force the swimmer applied when he pushes on the pool wall is 490 N.
The given parameters;
- mass of the swimmer, m = 65 kg
- acceleration of the swimmer, a = 6 m/s²
- frictional force experienced by the swimmer, Fk = 100 N
The force applied by the swimmer is calculated by applying Newton's second law of motion as shown below;
F = ma
∑F = 0
F - Fk = ma
F = Fk + ma
F = 100 + (65 x 6)
F = 490 N
Thus, the force the swimmer applied when he pushes on the pool wall is 490 N.
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