Answer:
A car accelerating to the right
Explanation:
The free-body diagram shows all the forces acting on an object. The length of each arrow is proportional to the magnitude of the force represented by that arrow.
In this free-body diagram, we see that there are 4 forces acting on the object, in 4 different directions. We also see that the two vertical forces are equal so they are balanced, while the force to the rigth is larger than the force to the left: this means that there is a net force to the right, so the object is accelerating to the right.
Therefore, the correct answer is:
A car accelerating to the right
Answer:
Explanation:
The centripetal acceleration of the child, which is moving by uniform circular motion, is given by
where
v = 5 m/s is the tangential speed of the child
r = 1.2 m is the radius of the circular path
Substituting the numbers into the equation, we find
Answer:
Please find the answer in the explanation.
Explanation:
Mention three disadvantages of friction between the parts of a machine
Three disadvantages of friction between the part of a machine are;
1. Friction causes wear and tear of machine parts.
2. Friction generates heat between the part of a machine.
3. Friction reduces the efficiency of a machine.
How does.
1 . oiling
2 using ball bearing
To reduce friction, you need to apply a lubricant. Oil and grease are examples of a lubricant. A lubricant helps to reduce friction by making the surface of the machine parts slippery thereby reducing tear and wear.
Also, friction can be reduced by using ball bearing which will allow the rolling of machine parts.
Answer:
The maximum speed of the object is 0.662 m/s.
Explanation:
Given that,
Mass of the object, m = 0.67 kg
Spring constant of the spring, k = 15 N/m
The spring is pulled 14 cm or 0.14 m from the equilibrium position and released.
To find,
The maximum speed of the object.
Solution,
The maximum speed of the object is given by :
........(1)
Where
So,
v = 0.662 m/s
So, the maximum speed of the object is 0.662 m/s.