Question

III Short Answer:
1. Define thrust & Pressure.
3. What is meant by Atmospheric pressure?
2. What are the factors the pressure exerted by the liquids depends on?
5. Why cutting tools have sharp edges?
2. The law states that the external pressure applied on an
3. Write the numerical value of the atmospheric pressure on the surface of earth in pasc
4. Why a Camel can run in a desert easily?
b. 1 Nm-2
d. Conjun
b. Compressible
c. Fractional Step
ASSIGNMENT NO - 7
FLUIDS
I.
Choose the correct answer:
1. One Pascal =
a. 2 Nm 2
d. Nm-
c. NM
.liquid is transmitted
throughout the liquid
a. Incompressible
a. 1.013 x 104
b. 1.013 x 102
d. 101.3 x 10
c. 1.013 x 10
1​

Answer 1

1. ᴛʜʀᴜsᴛ: ғᴏʀᴄᴇ ᴀᴄᴛɪɴɢ ᴘᴇʀᴘᴇɴᴅɪᴄᴜʟᴀʀʟʏ ᴏɴ ᴀ sᴜʀғᴀᴄᴇ ɪs ᴄᴀʟʟᴇᴅ ᴛʜʀᴜsᴛ. ɪᴛs sɪ ᴜɴɪᴛ ɪs ɴᴇᴡᴛᴏɴ (ɴ). ᴘʀᴇssᴜʀᴇ: ᴛʜᴇ ᴛʜʀᴜsᴛ ᴀᴄᴛɪɴɢ ᴏɴ ᴜɴɪᴛ ᴀʀᴇᴀ ᴏғ ᴛʜᴇ sᴜʀғᴀᴄᴇ ɪs ᴄᴀʟʟᴇᴅ ᴘʀᴇssᴜʀᴇ. ɪᴛs sɪ ᴜɴɪᴛ ɪs ᴘᴀsᴄᴀʟ (ᴘᴀ).
2. ᴘʀᴇssᴜʀᴇ ᴡɪᴛʜɪɴ ᴀ ʟɪϙᴜɪᴅ ᴅᴇᴘᴇɴᴅs ᴏɴʟʏ ᴏɴ ᴛʜᴇ ᴅᴇɴsɪᴛʏ ᴏғ ᴛʜᴇ ʟɪϙᴜɪᴅ, ᴛʜᴇ ᴀᴄᴄᴇʟᴇʀᴀᴛɪᴏɴ ᴅᴜᴇ ᴛᴏ ɢʀᴀᴠɪᴛʏ, ᴀɴᴅ ᴛʜᴇ ᴅᴇᴘᴛʜ ᴡɪᴛʜɪɴ ᴛʜᴇ ʟɪϙᴜɪᴅ. ᴛʜᴇ ᴘʀᴇssᴜʀᴇ ᴇxᴇʀᴛᴇᴅ ʙʏ sᴜᴄʜ ᴀ sᴛᴀᴛɪᴄ ʟɪϙᴜɪᴅ ɪɴᴄʀᴇᴀsᴇs ʟɪɴᴇᴀʀʟʏ ᴡɪᴛʜ ɪɴᴄʀᴇᴀsɪɴɢ ᴅᴇᴘᴛʜ.
3. ᴛʜᴀᴛ ᴘʀᴇssᴜʀᴇ ɪs ᴄᴀʟʟᴇᴅ ᴀᴛᴍᴏsᴘʜᴇʀɪᴄ ᴘʀᴇssᴜʀᴇ, ᴏʀ ᴀɪʀ ᴘʀᴇssᴜʀᴇ. ɪᴛ ɪs ᴛʜᴇ ғᴏʀᴄᴇ ᴇxᴇʀᴛᴇᴅ ᴏɴ ᴀ sᴜʀғᴀᴄᴇ ʙʏ ᴛʜᴇ ᴀɪʀ ᴀʙᴏᴠᴇ ɪᴛ ᴀs ɢʀᴀᴠɪᴛʏ ᴘᴜʟʟs ɪᴛ ᴛᴏ ᴇᴀʀᴛʜ. ᴀᴛᴍᴏsᴘʜᴇʀɪᴄ ᴘʀᴇssᴜʀᴇ ɪs ᴄᴏᴍᴍᴏɴʟʏ ᴍᴇᴀsᴜʀᴇᴅ ᴡɪᴛʜ ᴀ ʙᴀʀᴏᴍᴇᴛᴇʀ. ... ᴍᴇᴛᴇᴏʀᴏʟᴏɢɪsᴛs ᴅᴇsᴄʀɪʙᴇ ᴛʜᴇ ᴀᴛᴍᴏsᴘʜᴇʀɪᴄ ᴘʀᴇssᴜʀᴇ ʙʏ ʜᴏᴡ ʜɪɢʜ ᴛʜᴇ ᴍᴇʀᴄᴜʀʏ ʀɪsᴇs.
5.ᴄᴜᴛᴛɪɴɢ ᴛᴏᴏʟs ʜᴀᴠᴇ sʜᴀʀᴘ ᴇᴅɢᴇs ᴛᴏ ʀᴇᴅᴜᴄᴇ ᴛʜᴇ ғᴏʀᴄᴇ ʀᴇϙᴜɪʀᴇᴅ ᴛᴏ sʜᴇᴀʀ ᴍᴀᴛᴇʀɪᴀʟ ᴀᴡᴀʏ ғʀᴏᴍ ᴛʜᴇ ᴡᴏʀᴋ ᴘɪᴇᴄᴇ. sᴏᴍᴇ ᴄᴜᴛᴛɪɴɢ ᴛᴏᴏʟs ᴀʀᴇ ɴᴏᴛ sʜᴀʀᴘ ᴀɴᴅ ʜᴀᴠᴇ ᴅᴇʟɪʙᴇʀᴀᴛᴇʟʏ ᴄʜᴀᴍғᴇʀᴇᴅ ᴀɴᴅ ʜᴏɴᴇᴅ ᴇᴅɢᴇs.