• We need your support!

    We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
    Click here to Donate Now (View Announcement)

Physics: Post your doubts here!

S

Sajeeda Akeel

Messages
2
Reaction score
1
Points
13
nehaoscar said:
Ok yeah taking the real case scenario it is clear
But then as you said "a 'centripetal' force is any force that acts towards the centre. since the mud is on an object in circular motion, it will experience a force."
Doesn't that mean the mud will experience a force towards the centre?
Click to expand...
No...Actually the centripetal force acting toward the centre is approximately at 90 degrees of an angle to the velocity in which the object is moving.
Hence, it does not have a component that is in the direction of the velocity of the object.
So, obviously neither the object nor the mud moves toward the centre. But, yes...you can definitely state that the mud and the object both experience a force toward the centre. If this force weren't there the, the object and mud would both move off in a straight line.
There would be no circular motion.
The action of the centripetal force that ACTS TOWARD THE CENTRE basically just bends the otherwise straight-line motion of the mud and object.
I HOPE I MADE IT A LITTLE CLEAR. o_O:whistle:
 
The Sarcastic Retard

The Sarcastic Retard

Messages
2,206
Reaction score
2,824
Points
273
Sajeeda Akeel said:
View attachment 57865

Could anyone explain how you deduce the answer...
Step by step!!!! :)
Click to expand...
3.8 x 10^5 will be the distance of the edge of moon to telescope (radius)
omega = 9.7 x 10^-6
When theta is so small the curvature = straight line.
We have to find Arc length which can be considered as a diameter as theta (omega) is so small.
So S = r x theta
Hence s = 3.8 x 10^5 x 9.7 x 10^-6 = 3700m
 
M

My Name

Messages
4,988
Reaction score
23,955
Points
523
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w08_qp_2.pdf
question 4 part b
What else can I write except for...speed depends on pd and as pd is unchanged speed will remain same.

http://papers.xtremepapers.com/CIE/...and AS Level/Physics (9702)/9702_w04_qp_2.pdf
question 6 part b

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s07_qp_2.pdf
question 2 part d
Can anybody make this simple?
Please and thanks!
 
Last edited:
nehaoscar

nehaoscar

Messages
1,318
Reaction score
1,374
Points
173
Sajeeda Akeel said:
No...Actually the centripetal force acting toward the centre is approximately at 90 degrees of an angle to the velocity in which the object is moving.
Hence, it does not have a component that is in the direction of the velocity of the object.
So, obviously neither the object nor the mud moves toward the centre. But, yes...you can definitely state that the mud and the object both experience a force toward the centre. If this force weren't there the, the object and mud would both move off in a straight line.
There would be no circular motion.
The action of the centripetal force that ACTS TOWARD THE CENTRE basically just bends the otherwise straight-line motion of the mud and object.
I HOPE I MADE IT A LITTLE CLEAR. o_O:whistle:
Click to expand...
Okay yes thankyou so much! Now i get it! :D
 
You must log in or register to reply here.
Top