Answer:
<em>The person needs to apply 25 N to balance the seesaw</em>
Explanation:
<u>Moment</u>
The moment of a force is a measure of its tendency to cause a body to rotate about a specific point or axis.
The moment M of a force F located at a distance x from the axis of rotation is calculated as follows:
M = F.x
The image shows a moment of M=100 N.m is needed to be applied to balance the seesaw. It can also be noted that the distance to the pivot is x=4 m
To calculate the force needed to balance the seesaw, we solve for F:
F = 25 N
The person needs to apply 25 N to balance the seesaw
It depends on the type of question, mechanical condition and given values,
You can use the formula,
Coefficient of static friction = Force of Static friction / Normal force (perpendicular to contacting surfaces)
Hope this helps!
Answer:the magnitude of the vector would be
56.21
Answer:
60km/hr west
Explanation:
When you are dealing with velocity you always name the direction its going in
Answer:
Explanation:
a )
for convex mirror, focal length
f = + 20 / 2 = 10 cm
object distance u = 12 cm ( negative )
Using mirror formula
Putting the values
v = 5.45 cm
Size of image
=
= 4.08 mm .
It will be erect because only erect image is formed in convex mirror .
It will be virtual .
b )
Draw ray from tip of object parallel to principal axis and after reflection appears to be coming from focus . Second ray falls on the pole and reflects back making equal angle with principal axis . Draw the reflected ray backwards to cut the other ray . They cut each other where image is formed .