Search & Filtering
You joined a “dogsled” race during your winter break. To start, you
pulled the sled (total mass of 85 kg) with a force of 195N at 45° above
the horizontal. Find the work done on the sled after it moves at a
distance of 7m.
A constant force 𝑮⃗ ⃗
= (𝟓. 𝟏𝟏𝒋̂ + 𝟔. 𝟏𝟏 𝒌 ̂)𝑵 is applied to a particle that
undergoes a displacement 𝓵⃗ ⃗ ⃗
= (𝟒. 𝟏𝟏𝒋̂ − 𝟕. 𝟏𝟏 𝒌 ̂)𝒏. (a) the work done by
the force, and (b) the component of the force in the direction of the
displacement.
F1= 4 N 45O North of east F2= 8 N 30o North of west F3= 3 N. 20o South of West F4= 6.5 N North
F5= 2.5 N. East FR=
A steel circular rod with a radius of 15 cm is placed between two vertical supports
at 15 degrees Celsius. What compressive force is exerted by the vertical supports
if the temperature increases to 60 degrees Celsius? (The coefficient of linear
expansion for steel is 12 x 10-6°C-1 and the elastic modulus of steel is 200 x 10-9 N/m2).
Swinging a Water Bucket Overhead
General Instructions:Take a sturdy water bucket (can be replace by plastic cup or anything that you have in your house) ½ full of water and swing it in a circle over your head. Try the following situations:
-you swing it quickly
-you swing it slowly
-you swing and stop it when it is directly overhead
1.What happened when you swing it quickly?
1.1Explain your observations using the concepts and math equations of UCM.
What is derivation in physics and in maths?
Please give examples and the difference between calculating the slope and the derivative function.
Give an understandable explanation about the idea of derivation and how - where - when we use it.
If you can provide the answer with graphs that will be spectacular.
