1.A watch haneing from a chain swings back and forth every seconds. What is the frequency of its oscillations? Calculate answer to one decimal 2.In an experiment performed in a space station, a force of 13 N causes an object to have an acceleration equal to 4, 4 m/s What is the object's mass? Calculate answer to one decimal. 3.A person stands on a scale inside an elevator at rest. The scale reads 787 N. what is the person's mass? Calculate answer to one decimal. (use g=9.8 m/s^ 2 ) 4.A person stands on a scale inside an elevator at rest. The scale reads 800 N. The efevator accelerates upward at the rate of 1.3 m/s ^ 2 . What does the scale read then? Calculate answer to one decimal. ( use g=9.8 m/s^ 2 ) 5.A race car rounds a curve at 55 m/s The radius of the curve 363 m and the car's mass is 1,293 kg. What is the centripetal force acting on the car? Calculate answer to one decimal 6.A9 kg mass hangs from a rope. A force is applied to the rope so that the mass is accelerated upward at 2.2 m/s . What is the tension in the rope? Use g = 9.8 m/s ^ 2 Calculate answer to one decimal 7.A 14 kg block experiences a net force in the opposite direction of its velocity for 2 s. Its velocity decreases by9 m/s . What the magnitude of the net force? Calculate answer to one decimal. 8.A boy uses a string to swing a 1 kg stone around his head. If the string is 1.6 m, and can bear a maximum tension of 2.159 N. what is the maximum speed at which the boy can swing the stone without breaking the string? Calculate answer to one decimal.
Simple harmonic motion
Simple harmonic motion is a type of periodic motion in which an object undergoes oscillatory motion. The restoring force exerted by the object exhibiting SHM is proportional to the displacement from the equilibrium position. The force is directed towards the mean position. We see many examples of SHM around us, common ones are the motion of a pendulum, spring and vibration of strings in musical instruments, and so on.
Simple Pendulum
A simple pendulum comprises a heavy mass (called bob) attached to one end of the weightless and flexible string.
Oscillation
In Physics, oscillation means a repetitive motion that happens in a variation with respect to time. There is usually a central value, where the object would be at rest. Additionally, there are two or more positions between which the repetitive motion takes place. In mathematics, oscillations can also be described as vibrations. The most common examples of oscillation that is seen in daily lives include the alternating current (AC) or the motion of a moving pendulum.
1.A watch haneing from a chain swings back and forth every seconds. What is the frequency of its oscillations? Calculate answer to one decimal
2.In an experiment performed in a space station, a force of 13 N causes an object to have an acceleration equal to 4, 4 m/s What is the object's mass? Calculate answer to one decimal.
3.A person stands on a scale inside an elevator at rest. The scale reads 787 N. what is the person's mass? Calculate answer to one decimal. (use g=9.8 m/s^ 2 )
4.A person stands on a scale inside an elevator at rest. The scale reads 800 N. The efevator accelerates upward at the rate of 1.3 m/s ^ 2 . What does the scale read then? Calculate answer to one decimal. ( use g=9.8 m/s^ 2 )
5.A race car rounds a curve at 55 m/s The radius of the curve 363 m and the car's mass is 1,293 kg. What is the
6.A9 kg mass hangs from a rope. A force is applied to the rope so that the mass is accelerated upward at 2.2 m/s . What is the tension in the rope? Use g = 9.8 m/s ^ 2 Calculate answer to one decimal
7.A 14 kg block experiences a net force in the opposite direction of its velocity for 2 s. Its velocity decreases by9 m/s . What the magnitude of the net force? Calculate answer to one decimal.
8.A boy uses a string to swing a 1 kg stone around his head. If the string is 1.6 m, and can bear a maximum tension of 2.159 N. what is the maximum speed at which the boy can swing the stone without breaking the string? Calculate answer to one decimal.
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