If the forces on an object are balanced (or if there are no forces acting on it), this is what happens:
a stationary object stays still
a moving object continues to move at the same speed and in the same direction
Answer:
The average speed will be 1.5km/hr .
Explanation:
Distance need to be traveled = 7.5Km
Time taken = 5 hours
Average speed refers to total distance traveled with respect to total time taken .
It can be calculated as given below :
Average speed =total distance /total time taken
Substituting the values we get ,as shown below
Average speed =7.5/5=75/50
Average speed = 1.5 Km/hr
10.00 °C this is the right answer need more question feel free to post
Explanation:
click the link you can get answer of the question
The mass of the hoop is the only force which is computed by:F net = 2.8kg*9.81m/s^2 = 27.468 N
the slow masses that must be quicker are the pulley, ring, and the rolling sphere.
The mass correspondent of M the pulley is computed by torque τ = F*R = I*α = I*a/R F = M*a = I*a/R^2 --> M = I/R^2 = 21/2*m*R^2/R^2 = 1/2*m
The mass equal of the rolling sphere is computed by: the sphere revolves around the contact point with the table. So using the proposition of parallel axes, the moment of inertia of the sphere is I = 2/5*mR^2 for spin about the midpoint of mass + mR^2 for the distance of the axis of rotation from the center of mass of the sphere. I = 7/5*mR^2 M = 7/5*m
the acceleration is then a = F/m = 27.468/(2.8 + 1/2*2 + 7/5*4) = 27.468/9.4 = 2.922 m/s^2
